Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 10387842 | System, method, and program for filtering emails | Kenji Hirota, Tomonori Sugiura | 2019-08-20 | $1,949,000 |
| 8478832 | Checking destination email addresses against historical address information | Kenji Hirota, Tomonori Sugiura, Masami Tada | 2013-07-02 | $6,261,000 |
| 8380976 | System, server, method, and computer program for relaying electronic mail | Kenji Hirota, Tomonori Sugiura | 2013-02-19 | $3,959,000 |
| 8250160 | Checking destination email addresses against historical address information | Kenji Hirota, Tomonori Sugiura, Masami Tada | 2012-08-21 | $4,162,000 |